Article for use in an aerosol provision system

ABSTRACT

An article for use as or as part of a non-combustible aerosol provision system includes an aerosol generating material having at least one aerosol forming material, a first hollow tubular body disposed downstream of the aerosol generating material, the first hollow tubular body having a wall thickness greater than about 0.5 mm, a second hollow tubular body with a wall thickness greater than about 0.5 mm and a cylindrical body disposed between the first hollow tubular body and the second hollow tubular body. Also described is an article including a hollow tubular member formed from cellulosic material and disposed immediately downstream of the aerosol generating material, where the length of the hollow tubular member is between about 5 mm and about 18 mm. A system and a method of manufacturing an article are also described.

RELATED APPLICATION INFORMATION

The present application is a National Phase entry of PCT Application No.PCT/GB2020/053333, filed Dec. 21, 2020, which claims priority from GBPatent Application No. 1919064.4 (filed Dec. 20, 2019) and GB PatentApplication No. 2019573.1 (filed Dec. 11, 2020), each of which is herebyfully incorporated herein by reference.

TECHNICAL FIELD

The following relates to an article for use in or as part of anon-combustible aerosol provision system, a non-combustible aerosolprovision system including an article and a method of manufacturing anarticle.

BACKGROUND

Certain tobacco industry products produce an aerosol during use, whichis inhaled by a user. For example, tobacco heating devices heat anaerosol generating substrate such as tobacco to form an aerosol byheating, but not burning, the substrate. Such tobacco industry productscommonly include mouthpieces through which the aerosol passes to reachthe user’s mouth.

SUMMARY

In some embodiments described herein, in a first aspect there isprovided an article for use as or as part of a non-combustible aerosolprovision system, the article comprising: an aerosol generating materialcomprising at least one aerosol forming material; a first hollow tubularbody disposed downstream of the aerosol generating material, the firsthollow tubular body comprising a wall thickness greater than about 0.5mm, a second hollow tubular body comprising a wall thickness greaterthan about 0.5 mm; and a cylindrical body disposed between the firsthollow tubular body and the second hollow tubular body.

In some embodiments described herein, in a second aspect there isprovided an article for use as or as part of a non-combustible aerosolprovision system, the article comprising: an aerosol generating materialcomprising at least one aerosol forming material, and a hollow tubularmember formed from cellulosic material and disposed immediatelydownstream of the aerosol generating material wherein, the length of thehollow tubular member is between about 5 mm and about 18 mm In someembodiments described herein, in a third aspect there is provided asystem comprising: a non-combustible aerosol provision device comprisinga heater; and an article according to the first or second aspects above.

In some embodiments described herein, in a fourth aspect there isprovided a method of manufacturing an article for use as or as part of anon-combustible aerosol provision system, the method comprising:providing an aerosol generating material comprising at least one aerosolforming material and disposing a tubular body downstream of the aerosolgenerating material the tubular body comprising a wall thickness greaterthan about 0.5 mm; disposing a cylindrical body downstream of thetubular body; and disposing a second tubular body downstream of thecylindrical body.

BRIEF DESCRIPTION OF THE DRAWINGS

Embodiments will now be described, by way of example only, withreference to the accompanying drawings, in which:

FIG. 1 illustrates an article for use as or as part of a non-combustibleaerosol provision system, the article comprising a first hollow tubularbody, a second hollow tubular body, and a cylindrical body disposedbetween the first and second hollow tubular bodies;

FIG. 2 illustrates an article for use as or as part of a non-combustibleaerosol provision system, the article including an aerosol generatingsection configured to extend away from a heater of the non-combustibleaerosol provision system by a minimum distance;

FIG. 3 illustrates an article for use as or as part of a non-combustibleaerosol provision system, the article including a cavity downstream ofthe aerosol generating section formed by a wrapper; FIG. 4 illustratesan article for use as or as part of a non-combustible aerosol provisionsystem, the article including an alternative mouth end section;

FIG. 4 a illustrates an article for use as or as part of anon-combustible aerosol provision system, the article including analternative mouth end section;

FIG. 5 illustrates an article for use as or as part of a non-combustibleaerosol provision system, the article including an alternative mouth endsection;

FIG. 6 schematically illustrates the steps of a method of manufacturingan article; FIG. 7 is a perspective illustration of a non-combustibleaerosol provision device for generating aerosol from the aerosolgenerating material of the articles of FIGS. 1, 2, 3, 4, 4 a and 5 ;

FIG. 8 illustrates the device of FIG. 7 with the outer cover removed andwithout an article present;

FIG. 9 is a side view of the device of FIG. 7 in partial cross-section;

FIG. 10 is an exploded view of the device of FIG. 7 , with the outercover omitted FIG. 11A is a cross sectional view of a portion of thedevice of FIG. 7 ;

FIG. 11B is a close-up illustration of a region of the device of FIG.11A.

DETAILED DESCRIPTION

As used herein, the term “delivery system” is intended to encompasssystems that deliver at least one substance to a user, and includes:combustible aerosol provision systems, such as cigarettes, cigarillos,cigars, and tobacco for pipes or for roll-your-own or for make-your-owncigarettes (whether based on tobacco, tobacco derivatives, expandedtobacco, reconstituted tobacco, tobacco substitutes or other smokablematerial); non-combustible aerosol provision systems that releasecompounds from an aerosol-generating material without combusting theaerosol-generating material, such as electronic cigarettes, tobaccoheating products, and hybrid systems to generate aerosol using acombination of aerosol-generating materials; and aerosol-free deliverysystems that deliver the at least one substance to a user orally,nasally, trans-dermally or in another way without forming an aerosol,including but not limited to, lozenges, gums, patches, articlescomprising inhalable powders, and oral products such as oral tobaccowhich includes snus or moist snuff, wherein the at least one substancemay or may not comprise nicotine.

According to the present disclosure, a “combustible” aerosol provisionsystem is one where a constituent aerosol-generating material of theaerosol provision system (or component thereof) is combusted or burnedduring use in order to facilitate delivery of at least one substance toa user.

According to the present disclosure, a “non-combustible” aerosolprovision system is one where a constituent aerosol-generating materialof the aerosol provision system (or component thereof) is not combustedor burned in order to facilitate delivery of at least one substance to auser In embodiments described herein, the delivery system is anon-combustible aerosol provision system, such as a powerednon-combustible aerosol provision system. In some embodiments, thenon-combustible aerosol provision system is an electronic cigarette,also known as a vaping device or electronic nicotine delivery system(END), although it is noted that the presence of nicotine in theaerosol-generating material is not a requirement. In some embodiments,the non-combustible aerosol provision system is an aerosol generatingmaterial heating system, also known as a heat-not-burn system. Anexample of such a system is a tobacco heating system.

In one embodiment, the non-combustible aerosol provision system is ahybrid system to generate aerosol using a combination of aerosolizablematerials, one or a plurality of which may be heated. Each of theaerosolizable materials may be, for example, in the form of a solid,liquid or gel and may or may not contain nicotine. In one embodiment,the hybrid system comprises a liquid or gel aerosolizable material and asolid aerosolizable material. The solid aerosolizable material maycomprise, for example, tobacco or a non-tobacco product

Typically, the non-combustible aerosol provision system may comprise anon- combustible aerosol provision device and a consumable for use withthe non-combustible aerosol provision device.

In some embodiments, the disclosure relates to consumables comprisingaerosol generating material and configured to be used withnon-combustible aerosol provision devices. These consumables aresometimes referred to as articles throughout the disclosure. Theaerosol-generating material also referred to as aerosol generatingmaterial can be tobacco material as described herein.

A consumable is an article comprising or consisting ofaerosol-generating material, part or all of which is intended to beconsumed during use by a user. A consumable may comprise one or moreother components, such as an aerosol-generating material storage area,an aerosol-generating material transfer component, an aerosol generationarea, a housing, a wrapper, a mouthpiece, a filter and/ or anaerosol-modifying agent. A consumable may also comprise an aerosolgenerator, such as a heater, that emits heat to cause theaerosol-generating material to generate aerosol in use. The heater may,for example, comprise combustible material, a material heatable byelectrical conduction, or a susceptor.

In some embodiments, the non-combustible aerosol provision system, suchas a non-combustible aerosol provision device thereof, may comprise apower source and a controller. The power source may, for example, be anelectric power source or an exothermic power source. In someembodiments, the exothermic power source comprises a carbon substratewhich may be energized so as to distribute power in the form of heat toan aerosol-generating material or to a heat transfer material inproximity to the exothermic power source.

In some embodiments, the non-combustible aerosol provision system maycomprise an area for receiving the consumable, an aerosol generator, anaerosol generation area, a housing, a mouthpiece, a filter and/ or anaerosol-modifying agent

In some embodiments, the consumable for use with the non-combustibleaerosol provision device may comprise aerosol-generating material, anaerosol-generating material storage area, an aerosol-generating materialtransfer component, an aerosol generator, an aerosol generation area, ahousing, a wrapper, a filter, a mouthpiece, and/ or an aerosol-modifyingagent.

In some embodiments, the substance to be delivered may be anaerosol-generating material or a material that is not intended to beaerosolized. As appropriate, either material may comprise one or moreactive constituents, one or more flavors, one or more aerosol-formermaterials, and/or one or more other functional materials.

An aerosol generator is an apparatus configured to cause aerosol to begenerated from the aerosol-generating material. In some embodiments, theaerosol generator is a heater configured to subject theaerosol-generating material to heat energy, so as to release one or morevolatiles from the aerosol-generating material to form an aerosol.

In some embodiments, the aerosol generator is configured to cause anaerosol to be generated from the aerosol-generating material withoutheating. For example, the aerosol generator may be configured to subjectthe aerosol-generating material to one or more of vibration, increasedpressure, or electrostatic energy. Aerosol-generating material is amaterial that is capable of generating aerosol, for example when heated,irradiated or energized in any other way. Aerosol-generating materialmay, for example, be in the form of a solid, liquid or gel which may ormay not contain an active substance and/or flavorants. In someembodiments, the aerosol generating material may comprise an “amorphoussolid”, which may alternatively be referred to as a “monolithic solid”(i.e. non-fibrous). In some embodiments, the amorphous solid may be adried gel. The amorphous solid is a solid material that may retain somefluid, such as liquid, within it In some embodiments, the aerosol-generating material may for example comprise from about 50 wt%, 60 wt%or 70 wt% of amorphous solid, to about 90 wt%, 95 wt% or 100 wt% ofamorphous solid.

The aerosol-generating material may comprise one or more activesubstances and/or flavors, one or more aerosol-former materials, andoptionally one or more other functional) material

The aerosol-former material may comprise one or more constituentscapable of forming an aerosol In some embodiments, the aerosol-formermaterial may comprise one or more of glycerine, glycerol, propyleneglycol, diethylene glycol, triethylene glycol, tetraethylene glycol,1,3-butylene glycol, erythritol, meso-Erythritol, ethyl vanillate, ethyllaurate, a diethyl suberate, triethyl citrate, triacetin, a diacetinmixture, benzyl benzoate, benzyl phenyl acetate, tributyrin, laurylacetate, lauric acid, myristic acid, and propylene carbonate The one ormore other functional materials may comprise one or more of pHregulators, coloring agents, preservatives, binders, fillers,stabilizers, and/or antioxidants.

The material may be present on or in a support, to form a substrate. Thesupport may, for example, be or comprise paper, card, paperboard,cardboard, reconstituted material, a plastics material, a ceramicmaterial, a composite material, glass, a metal, or a metal alloy. Insome embodiments, the support comprises a susceptor. In someembodiments, the susceptor is embedded within the material. In somealternative embodiments, the susceptor is on one or either side of thematerial. An aerosol-modifying agent is a substance, typically locateddownstream of the aerosol generation area, that is configured to modifythe aerosol generated, for example by changing the taste, flavor,acidity or another characteristic of the aerosol. The aerosol modifyingagent may be provided in an aerosol-modifying agent release component,that is operable to selectively release the aerosol-modifying agent

The aerosol -modifying agent may, for example, be an additive or asorbent. The aerosol-modifying agent may, for example, comprise one ormore of a flavorant, a colorant, water, and a carbon adsorbent. Theaerosol-modifying agent may, for example, be a solid, a liquid, or agel. The aerosol-modifying agent may be in powder, thread or granuleform. The aerosol-modifying agent may be free from filtration material.

A susceptor is a material that is heatable by penetration with a varyingmagnetic field, such as an alternating magnetic field. The susceptor maybe an electrically-conductive material, so that penetration thereof witha varying magnetic field causes induction heating of the heatingmaterial. The heating material may be magnetic material, so thatpenetration thereof with a varying magnetic field causes magnetichysteresis heating of the heating material. The susceptor maybe bothelectrically-conductive and magnetic, so that the susceptor is heatableby both heating mechanisms. The device that is configured to generatethe varying magnetic field is referred to as a magnetic field generator,herein.

Induction heating is a process in which an elcctrically-conductivceobject is heated by penetrating the object with a varying magnetic fieldThe process is described by Faraday’s law of induction and Ohm’s law. Aninduction heater may comprise an electromagnet and a device for passinga varying electrical current, such as an alternating current, throughthe electromagnet. When the electromagnet and the object to be heatedare suitably relatively positioned so that the resultant varyingmagnetic field produced by the electromagnet penetrates the object, oneor more eddy currents are generated inside the object. The object has aresistance to the flow of electrical currents. Therefore, when such eddycurrents are generated in the object, their flow against the electricalresistance of the object causes the object to be heated. This process iscalled Joule, ohmic, or resistive heating. An object that is capable ofbeing inductively heated is known as a susceptor. In one embodiment, thesusceptor is in the form of a closed circuit. It has been found that,when the susceptor is in the form of a closed circuit, magnetic couplingbetween the susceptor and the electromagnet in use is enhanced, whichresults in greater or improved Joule heating.

Magnetic hysteresis heating is a process in which an object made of amagnetic material is heated by penetrating the object with a varyingmagnetic field. A magnetic material can be considered to comprise manyatomic-scale magnets, or magnetic dipoles. When a magnetic fieldpenetrates such material, the magnetic dipoles align with the magneticfield. Therefore, when a varying magnetic field, such as an alternatingmagnetic field, for example as produced by an electromagnet, penetratesthe magnetic material, the orientation of the magnetic dipoles changeswith the varying applied magnetic field. Such magnetic dipolereorientation causes heat to be generated in the magnetic material.

When an object is both electrically-conductive and magnetic, penetratingthe object with a varying magnetic field can cause both Joule heatingand magnetic hysteresis heating in the object. Moreover, the use ofmagnetic material can strengthen the magnetic field, which can intensitythe Joule heating

In each of the above processes, as heat is generated inside the objectitself, rather than by an external heat source by heat conduction, arapid temperature rise in the object and more uniform heat distributioncan be achieved, particularly through selection of suitable objectmaterial and geometry, and suitable varying magnetic field magnitude andorientation relative to the object. Moreover, as induction heating andmagnetic hysteresis heating do not require a physical connection to beprovided between the source of the varying magnetic field and theobject, design freedom and control over the heating profile may begreater, and cost may be lower. Articles, for instance those in theshape of rods, are often named according to the product length:“regular” (typically in the range 68 - 75 mm, e.g. from about 68 mm toabout 72 mm), “short” or “mini” (68 mm or less), “king-size” (typicallyin the range 75 - 91 mm, eg. from about 79 mm to about 88 mm), “long” or“super-king” (typically in the range 91 - 105 mm, e.g. from about 94 mmto about 101 mm) and “ultra-long” (typically in the range from about 110mm to about 121 mm). They are also named according to the productcircumference: “regular” (about 23 - 25 mm), “wide” (greater than 25mm), “slim” (about 22 - 23 mm), “demi-slim” (about 19 - 22 mm),“super-slim” (about 16 - 19 mm), and “micro-slim” (less than about 16mm). Accordingly, an article in a king-size, super-slim format will, forexample, have a length of about 83 mm and a circumference of about 17mm.

Each format may be produced with mouthpieces of different lengths. Themouthpiece length will be from about 30 mm to 50 mm. A tipping paperconnects the mouthpiece to the aerosol generating material and willusually have a greater length than the mouthpiece, for example from 3 to10 mm longer, such that the tipping paper covers the mouthpiece andoverlaps the aerosol generating material, for instance in the form of arod of substrate material to connect the mouthpiece to the rod. Articlesand their aerosol generating materials and mouthpieces described hereincan be made in, but are not limited to, any of the above formats.

The terms ‘upstream’ and ‘downstream’ used herein are relative termsdefined in relation to the direction of mainstream aerosol drawn thoughan article or device in use.

The filamentary tow or filter material described herein can comprisecellulose acetate fiber tow. The filamentary tow can also be formedusing other materials used to form fibers, such as polyvinyl alcohol(PVOH), polylactic acid (PLA), polycaprolactone (PCL), poly(i-4butanediol succinate) (PBS), poly(butyleneadipate-co-terephthalate)(PBAT), starch based materials, cotton,aliphatic polyester materials and polysaccharide polymers or acombination thereof. The filamentary tow may be plasticized with asuitable plasticizerplasticizer for the tow, such as triacetin where thematerial is cellulose acetate tow, or the tow may be non-plasticized.The tow can have any suitable specification, such as fibers having across section which is ‘Y’ shaped, ‘X’ shaped or ‘O’ shaped. The fibersof the tow may have filamentary denier values between 2.5 and 15 denierper filament, for example between 8.0 and 11.0 denier per filament andtotal denier values of 5,000 to 50,000, for example between 10,000 and40,000. When viewed in cross section, the fibers may have anisoperimetric ratio L²/A of 25 or less, preferably 20 or less, and morepreferably 15 or less, where L is the length of the perimeter of thecross section and is the area of the cross section. Filter materialdescribed herein also includes cellulose-based materials such as paper.Such materials may have a relatively low density, such as between abouto.i and about 0.45 grams per cubic centimeter, to allow air and/oraerosol to pass through the material. Although described as filtermaterials, such materials may have a primary purpose, such as increasingthe resistance to draw of a component, that is not related to filtrationas such.

As used herein, the term “tobacco material” refers to any materialcomprising tobacco or derivatives or substitutes thereof. The term“tobacco material” may include one or more of tobacco, tobaccoderivatives, expanded tobacco, reconstituted tobacco or tobaccosubstitutes The tobacco material may comprise one or more of groundtobacco, tobacco fiber, cut tobacco, extruded tobacco, tobacco stem,tobacco lamina, reconstituted tobacco and/or tobacco extract

In the tobacco material described herein, the tobacco material containsan aerosol forming material In this context, an “aerosol formingmaterial” is an agent that promotes the generation of an aerosol. Anaerosol forming material may promote the generation of an aerosol bypromoting an initial vaporization and/or the condensation of a gas to aninhalable solid and/or liquid aerosol. In some embodiments, an aerosolforming material may improve the delivery of flavor from the aerosolgenerating material. In general, any suitable aerosol forming materialor agents may be included in the aerosol generating material of theinvention, including those described herein. Other suitable aerosolforming materials include, but are not limited to: a polyol such assorbitol, glycerol, and glycols like propylene glycol or triethyleneglycol, a non-polyol such as monohydric alcohols, high boiling pointhydrocarbons, acids such as lactic acid, glycerol derivatives, esterssuch as diacetin, triacetin, triethylene glycol diacetate, triethylcitrate or myristates including ethyl myristate and isopropyl myristateand aliphatic carboxylic acid esters such as methyl stearate, dimethyldodecanedioate and dimethyl tetradecanedioate In some embodiments, theaerosol forming material may be glycerol, propylene glycol, or a mixtureof glycerol and propylene glycol. The total amount of glycerol,propylene glycol, or a mixture of glycerol and propylene glycol usedmaybe in the range of between 10% and 30%, for instance between 15% and25% of the tobacco material measured on a dry weight basis. Glycerolmaybe present in an amount of from 10 to 20% by weight of the tobaccomaterial, for example 13 to 16% by weight of the composition, or about14% or 15% by weight of the composition. Propylene glycol, if present,may be present in an amount of from 0.1 to 0.3% by weight of thecomposition. In some embodiments, the substance to be deliveredcomprises an active substance.

The active substance as used herein may be a physiologically activematerial, which is a material intended to achieve or enhance aphysiological response. The active substance may for example be selectedfrom nutraceuticals, nootropics, psychoactives. The active substance maybe naturally occurring or synthetically obtained. The active substancemay comprise for example nicotine, caffeine, taurine, theine, vitaminssuch as B6 or Bi2 or C, melatonin, cannabinoids, or constituents,derivatives, or combinations thereof. The active substance may compriseone or more constituents, derivatives or extracts of tobacco, cannabisor another botanical

In some embodiments, the active substance comprises nicotine. In someembodiments, the active substance comprises caffeine, melatonin orvitamin B12.

As noted herein, the active substance may comprise or be derived fromone or more botanicals or constituents, derivatives or extracts thereof.As used herein, the term “botanical” includes any material derived fromplants including, but not limited to, extracts, leaves, bark, fibers,stems, roots, seeds, flowers, fruits, pollen, husk, shells or the like.Alternatively, the material may comprise an active compound naturallyexisting in a botanical, obtained synthetically. The material may be inthe form of liquid, gas, solid, powder, dust, crushed particles,granules, pellets, shreds, strips, sheets, or the like. Examplebotanicals are tobacco, eucalyptus, star anise, hemp, cocoa, cannabis,fennel, lemongrass, peppermint, spearmint, rooibos, chamomile, flax,ginger, ginkgo biloba, hazel, hibiscus, laurel, licorice (liquorice),matcha, mate, orange skin, papaya, rose, sage, tea such as green tea orblack tea, thyme, clove, cinnamon, coffee, aniseed (anise), basil, bayleaves, cardamom, coriander, cumin, nutmeg, oregano, paprika, rosemary,saffron, lavender, lemon peel, mint, juniper, elderflower, vanilla,wintergreen, beefsteak plant, curcuma, turmeric, sandalwood, cilantro,bergamot, orange blossom, myrtle, cassis, valerian, pimento, mace,damien, marjoram, olive, lemon balm, lemon basil, chive, carvi, verbena,tarragon, geranium, mulberry, ginseng, theanine, theacrine, maca,ashwagandha, damiana, guarana, chlorophyll, baobab or any combinationthereof. The mint maybe chosen from the following mint varieties: MenthaArventis, Mentha c.v, Mentha niliaca, Mentha piperita, Mentha piperitacitrata c.v., Mentha piperita c v, Mentha spicata crispa, Menthacardifolia, Memtha longifolia, Mentha suaveolens variegata, Menthapulegium, Mentha spicata c.v. and Mentha suaveolens

In some embodiments, the active substance comprises or is derived fromone or more botanicals or constituents, derivatives or extracts thereofand the botanical is tobacco.

In some embodiments, the active substance comprises or is derived fromone or more botanicals or constituents, derivatives or extracts thereofand the botanical is selected from eucalyptus, star anise, cocoa andhemp.

In some embodiments, the active substance comprises or derived from oneor more botanicals or constituents, derivatives or extracts thereof andthe botanical is selected from rooibos and fennel. In some embodiments,the substance to be delivered comprises a flavor.

As used herein, the terms “flavor” and “flavorant” refer to materialswhich, where local regulations permit, maybe used to create a desiredtaste, aroma or other somatosensorial sensation in a product for adultconsumers. They may include naturally occurring flavor materials,botanicals, extracts of botanicals, synthetically obtained materials, orcombinations thereof (eg., tobacco, cannabis, licorice (liquorice),hydrangea, eugenol. Japanese white bark magnolia leaf, chamomile,fenugreek, clove, maple, matcha, menthol. Japanese mint, aniseed(anise), cinnamon, turmeric, Indian spices, Asian spices, herb,wintergreen, cherry, berry, red berry, cranberry, peach, apple, orange,mango, clementine, lemon, time, tropical fruit, papaya, rhubarb, grape,durian, dragon fruit, cucumber, blueberry, mulberry, citrus fruits,Drambuie, bourbon, scotch, whiskey, gin, tequila, rum, spearmint,peppermint, lavender, aloe vera, cardamom, celery, cascarilla, nutmeg,sandalwood, bergamot, geranium, khat, naswar, betel, shisha, pine, honeyessence, rose oil, vanilla, lemon oil, orange oil, orange blossom,cherry blossom, cassia, caraway, cognac, jasmine, ylang- ylang, sage,fennel, wasabi, piment, ginger, coriander, coffee, hemp, a mint oil fromany species of the genus Mentha, eucalyptus, star anise, cocoa,lemongrass, rooibos, flax, ginkgo biloba, hazel, hibiscus, laurel, mate,orange skin, rose, tea such as green tea or black tea, thyme, juniper,elderflower, basil, bay leaves, cumin, oregano, paprika, rosemary,saffron, lemon peel, mint, beefsteak plant, curcuma, cilantro, myrtle,cassis, valerian, pimento, mace, damien, marjoram, olive, lemon balm,lemon basil, chive, carvi, verbena, tarragon, limonene, thymol,camphene), flavor enhancers, bitterness receptor site blockers,sensorial receptor site activators or stimulators, sugars and/or sugarsubstitutes (e.g, sucralose, acesulfame potassium, aspartame,saccharine, cyclamates, lactose, sucrose, glucose, fructose, sorbitol,or mannitol), and other additives such as charcoal, chlorophyll,minerals, botanicals, or breath freshening agents. They maybe imitation,synthetic or natural ingredients or blends thereof. They may be in anysuitable form, for example, liquid such as an oil, solid such as apowder, or gas. In some embodiments, the flavor comprises menthol,spearmint and/ or peppermint.

In some embodiments, the flavor comprises flavor components of cucumber,blueberry, citrus fruits and/or redberry. In some embodiments, theflavor comprises eugenol. In some embodiments, the flavor comprisesflavor components extracted from tobacco In some embodiments, the flavorcomprises flavor components extracted from cannabis.

In some embodiments, the flavor may comprise a sensate, which isintended to achieve a somatosensorial sensation which are usuallychemically induced and perceived by the stimulation of the fifth cranialnerve (trigeminal nerve), in addition to or in place of aroma or tastenerves, and these may include agents providing heating, cooling,tingling, numbing effect. A suitable heat effect agent may be, but isnot limited to, vanillyl ethyl ether and a suitable cooling agent maybe, but not limited to eucolyptol, WS-3. In the figures describedherein, like reference numerals are used to illustrate equivalentfeatures, articles or components.

FIGS. 1 to 5 illustrate articles 1, 1′, 1″, 1‴, 1‵ for use with anon-combustible aerosol provision device too comprising a heater 101,according to embodiments. The articles can be tobacco heated productconsumables. The article 1 comprises: a rod of aerosol generatingmaterial 2 comprising at least one aerosol forming material; a firsttubular body 3 disposed downstream of the aerosol generating material 2,the first tubular body 3 comprising filamentary tow; and a mouth endsection 20, 20′, 20″ disposed downstream of the first tubular body 3 Thearticle 1 is configured such that when the article 1 is inserted intothe non-combustible aerosol provision device too, the minimum distance dbetween the heater 101 of the non-combustible aerosol provision device100 and the first tubular body 3 is at least about 3 mm.

FIG. 1 illustrates an article comprising a rod of aerosol generatingmaterial 2 comprising at least one aerosol forming material; a firsthollow tubular body 3 disposed downstream of the aerosol generatingmaterial 2, the first hollow tubular body 3 comprising a wall thicknessgreater than about 0.5 mm; and a mouth end section 20 comprising a thirdhollow tubular body 22 comprising a wall thickness greater than about0.5 mm, and a cylindrical body 21 disposed between the first hollowtubular body 3 and the third hollow tubular body 22.

First hollow tubular body 3 is formed from cellulosic material anddisposed immediately downstream of the aerosol generating material. Thelength of the hollow tubular body is between about 5 mm and about 18 mm.

The minimum distance d between the heater 101 of the non-combustibleaerosol provision device too and the first tubular body prevents heatfrom the heater 101 damaging the filamentary tow of the first tubularbody 3. In particular, the filamentary tow may be cellulose acetate towstiffened with a plasticizer, as is known in the art. Heat from theheater 101 may cause the first tubular body 3 to shrink. This is avoidedby providing a gap between the first tubular body 3 and the heater 101.

The minimum distance d may be 3 mm upwards. Preferably 3 mm up to 10 mmand anything in between. Exemplified minimum distances d include 3 mm, 4mm, 5 mm, 6 mm, 7 mm, 8 mm, 9 mm and 10 mm

In each embodiment, the article further comprises a wrapper 6 at leastpartially surrounding the aerosol generating material 2 and the firsttubular body 3 to connect the aerosol generating material 2 to the firsttubular body 3. In some embodiments the wrapper may extend along thefull length of the article 1 to attach the mouth end section 20. In thepresent example, a further wrapper 6′ underlies the wrapper 6, andextends along the mouth end section 20. Further wrapper 6′ combines thesecond tubular body 5, the first tubular body 3, cylindrical body 21,and third tubular body 22, to form a wrapped mouth end section. In thepresent example, wrapper 6 extends partially along the length of theaerosol generating material 2 to attach the aerosol generating materialto the wrapped mouth end section. The wrapper 6 may be a paper materialcomprising a citrate, such as sodium nitrate or potassium nitrate. Insuch examples, the wrapper 6 may have a citrate content of 2% by weightor less, or 1% by weight or less. This reduces charring of the wrapper 6when the article 1 is heated in the non-combustible aerosol provisiondevice 100.

The first tubular body 3 is configured to serve as a heat dissipater toreduce the phenomena of ‘hot puff’. Hot puff is defined as aerosoldelivered to the user at an uncomfortably high temperature Hot puff maybe exacerbated when a user draws aerosol through a heated article 1 at ahigh rate, reducing the time for heat in the aerosol to be dissipatedWhen inserted into a non-combustible aerosol provision device 100, thefirst tubular body 3 separates the mouth end section from the heater 101to provide space for heat to dissipate before the aerosol reaches themouth end section 20. Further, it shall be appreciated that heat will beconducted away from the aerosol and into the first tubular body 3 as theaerosol is drawn therethrough. In this way, the first tubular body 3acts as a heat sink

In the present example, hollow tubular body 3 is formed from filamentarytow. In other embodiments, other constructions may be used, such asspirally wound layers of paper, cardboard tubes, tubes formed using apapier-mache type process, molded or extruded plastic tubes or similar.

The first tubular body 3 preferably has a wall thickness of at leastabout 325 pm and up to about 2 mm, preferably between 500 pm and 1.5 mmand more preferably between 750 pm and 1 mm. In the present example, thefirst tubular body 3 has a wall thickness of about 1 mm. The “wallthickness” of the first tubular body 3 corresponds to the thickness ofthe wall of the first tubular body 3 in a radial direction. This may bemeasured, for example, using a caliper. The use of filamentary towand/or wall thicknesses in these ranges have advantage of insulating thehot aerosol passing through the second cavity 3 a from the outer surfaceof the first tubular body 3.

The wall thickness together with the external diameter of the firsttubular body 3 together define the internal diameter or cavity size ofthe first tubular body 3. In some embodiments, the thickness of the wallof the first tubular body 3 is at least

325 microns and, preferably, at least 400, 500, 600, 700, 800, 900 or1000 microns. In some embodiments, the thickness of the wall of thefirst tubular body 3 is at least 1250 or 1500 microns.

In some embodiments, the thickness of the wall of the first tubular body3 is less than 2000 microns and, preferably, less than 1500 microns.

The increased thickness of the wall of the first tubular body 3 meansthat it has a greater thermal mass, which has been found to help reducethe temperature of the aerosol passing through the first tubular body 3and reduce the surface temperature of the mouth end section 20 atlocations downstream of the first tubular body 3. This is thought to bebecause the greater thermal mass of the first tubular body 3 allows thefirst tubular body 3 to absorb more heat from the aerosol in comparisonto a first tubular body 3 with a thinner wall thickness. The increasedthickness of the first tubular body 3 also channels the aerosolcentrally into the mouth end section 20 such that less heat from theaerosol is transferred to the outer portions of the mouth end section20.

Preferably, the density of the first tubular body 3 is at least about0.25 grams per cubic centimeter (g/cc), more preferably at least about0.3 g/cc. Preferably, the density of the first tubular body 3 is lessthan about 0.75 grams per cubic centimeter (g/cc), more preferably lessthan 0.6 g/cc. In some embodiments, the density of the first tubularbody 31 s between 0.25 and 0.75 g/cc, more preferably between 0.3 and0.6 g/cc, and more preferably between 0.4 g/cc and 0.6 g/cc or about 0.5g/cc These densities have been found to provide a good balance betweenimproved firmness afforded by denser material and the lower heattransfer properties of lower density material. For the purposes of thepresent example, the “density” of the first tubular body 3 refers to thedensity of the filamentary tow forming the element with any plasticizerincorporated. The density may be determined by dividing the total weightof the material forming the first tubular body 3 by the total volume ofthe material forming the first tubular body 3, wherein the total volumecan be calculated using appropriate measurements of the material formingthe first tubular body 3 taken, for example, using calipers. Wherenecessary, the appropriate dimensions maybe measured using a microscope

The filamentary tow forming the first tubular body 3 preferably has atotal denier of less than 45,000, more preferably less than 42,000. Thistotal denier has been found to allow the formation of a tubular element13 which is not too dense Preferably, the total denier is at least20,000, more preferably at least 25,000. In preferred embodiments, thefilamentary tow forming the first tubular body 3 has a total denierbetween 25,000 and 45,000, more preferably between 35,000 and 45,000.Preferably the cross- sectional shape of the filaments of tow are ‘Y’shaped, although in other embodiments other shapes such as ‘X’ shapedfilaments can be used

The filamentary tow forming the first tubular body 3 preferably has adenier per filament of greater than 3. This denier per filament has beenfound to allow the formation of a tubular element 13 which is not toodense. Preferably, the denier per filament is at least 4, morepreferably at least 5. In preferred embodiments, the filamentary towforming the first tubular body 3 has a denier per filament between 4 and10, more preferably between 4 and 9 In one example, the filamentary towforming the first tubular body 3 has an 8Y40,ooo tow formed fromcellulose acetate and comprising 18% plasticizer, for instancetriacetin.

The first tubular body 3 preferably comprises from 10% to 22% by weightof plasticizer. For cellulose acetate tow, the plasticizer is preferablytriacetin, although other plasticizers such as polyethelyne glycol (PEG)can be used. The first tubular body 3 can comprise less than about 18%by weight of plasticizer, such as triacetin, or less than about 17%,less than about 16% or less than about 15%. More preferably, the tubularbody 3 comprises from 10% to 20% by weight of plasticizer, for instanceabout about 11%, about 12%, about 13%, about 15%, about 17%, about 18%or about 19% plasticizer.

In some embodiments, the permeability of the material of the wall of thefirst tubular body 3 is at least too Coresta Units and, preferably, atleast 500 or 1000 Coresta Units.

It has been found that the relatively high penneability of the firsttubular body 3 increases the amount of heat that is transferred to thefirst tubular body 3 from the aerosol and thus reduces the temperatureof the aerosol The permeability of the first tubular body 3 has alsobeen found to increase the amount of moisture that is transferred fromthe aerosol to the first tubular body 3, which has been found to improvethe feel of the aerosol in the user’s mouth A high permeability of firsttubular body 3 also makes it easier to cut ventilation holes into thefirst tubular body 3 using a laser, meaning that a lower power of lasercan be used. The first tubular body 3 may comprise a filamentary towcomprising filaments having a cross-section with an isoperimetric ratioL²/A of 25 or less, 20 or less or 15 or less, where L is the length ofthe perimeter of the cross section and A is the area of the crosssection. In other words, the filaments may comprise a substantially ‘o’shaped cross section, or at least as close as it is possible to achieve.For a given denier per filament, filaments with a substantially ‘o’shaped cross section have a lower surface area than other crosssectional shapes, such as Y or ‘X’ shaped filaments. Therefore, thedelivery of aerosol to the user is improved. It shall be appreciatedthat aerosol drawn through the first tubular body 3 passes through botha central cavity 3 a in the first tubular body 3 and also partly throughthe filaments of the first tubular body 3 itself. By providing filamentswith a substantially ‘0’ shaped cross section, a greater proportion ofaerosol will pass through the filament of the first tubular body 3itself, increasing heat transfer to the first tubular body 3 yetfurther.

In some embodiments, the aerosol generating material 2 described hereinis a first aerosol generating material 2 and the first tubular body 3may comprise a second aerosol generating material For example, thesecond aerosol generating material may be disposed on an inner surfaceof the first tubular body 3.

The second aerosol generating material comprises at least one aerosolformer material, and may also comprise at least one aerosol modifyingagent, or other sensate material The aerosol former material and/ oraerosol modifying agent can be any aerosol former material or aerosolmodifying agent as described herein, or a combination thereof.

In use, as the aerosol generated from the first aerosol generatingmaterial 2 is drawn through the first tubular body 3, heat from thefirst aerosol may aerosolize the aerosol forming material of the secondaerosol generating material, to form a second aerosol. The secondaerosol may comprise a flavorant, which may be additional orcomplementary to the flavor of the first aerosol.

The article 1 may further comprise at least one ventilation area 12arranged to allow external air to flow into the article. In theillustrated embodiments, the ventilation area 12 comprises a row ofventilation apertures, or perforations, cut into the wrapper 6. Theventilation apertures may extend in a line around the circumference ofthe article 1. The ventilation area 12 may comprise two or more rows ofventilation apertures By providing a ventilation area 12, ambient airmay be drawn into the article during use to further cool the aerosol. Inthe illustrated embodiments, the at least one ventilation area 12 isarranged to provide external air into the cavity 3 a of the firsttubular body 3. To achieve this, the one or more rows of ventilationapertures extend around the circumference of the article over the firsttubular body 3. Suitably, the ventilation area 12 may be provided at aposition between 14 mm and 20 mm downstream of the aerosol generatingmaterial 2. For instance, the ventilation area may be provided at aposition about 14.5 mm or 18.5 mm downstream of the aerosol generatingmaterial 2. In other examples, ventilation may be provided at a position22.5 mm upstream of the mouth end of the article.

In one example, the ventilation area 12 comprises a single row ofperforations formed as laser perforations. In some other examples, theventilation area comprises first and second parallel rows ofperforations formed as laser perforations, for instance at positions17.925 mm and 18.625 mm respectively from the mouth end. Theseperforations pass though the wrapper 6 and first tubular body 3. Inalternative embodiments, the ventilation can be provided at otherlocations.

In some examples, the perforations pass through the full thickness ofthe wall of the hollow tubular body 3. In other examples, theventilations may be formed through only a portion of the wall thicknessof the tubular body For example, the ventilation perforation may extendinto the tubular body by a depth of up to about 0.2 mm, or up to about0.3 mm, or up to about 0.5 mm, or up to about 1 mm, or up to about 1.5mm.

Alternatively, the ventilation can be provided via a single row ofperforations, for instance laser perforations, into the portion of thearticle 1 in which the first tubular body 3 is located. This has beenfound to result in improved aerosol formation, which is thought toresult from the airflow through the perforations being more uniform thanwith multiple rows of perforations, for a given ventilation level. Inthe present example, the ventilation area 12 comprises a single row oflaser perforations 18.5 mm downstream of the aerosol generating material2. It shall be appreciated that the exact location of the at least oneventilation area 12 is not essential. In another embodiment, the atleast one ventilation area 12 is arranged to provide external air intothe aerosol generating material 2 To achieve this, the one or more rowsof ventilation apertures extend around the circumference of the articleover the rod of aerosol generating material 2.

The level of ventilation provided by the at least one ventilation area12 is within the range of 40% to 70% of the volume of aerosol generatedby the aerosol generating material 2 passing through the article 1, whenthe article 1 is heated in the non- combustible aerosol provision devicetoo.

Aerosol temperature has been found to generally increase with a drop inthe ventilation level. However the relationship between aerosoltemperature and ventilation level does not appear to be linear, withvariations in ventilation, for instance due to manufacturing tolerances,having less impact at lower target ventilation levels. For instance,with a ventilation tolerance of ±15%, for a target ventilation level of75%, the aerosol temperature could increase by approximately 6° C. atthe lower ventilation limit (60% ventilation). However, with a targetventilation level of 60% the aerosol temperature may only increase byapproximately 3-5° C. at the lower vent limit (45% ventilation) Thetarget ventilation level of the article can therefore be within therange 40% to 70%, for instance, 45% to 65%. The mean ventilation levelof at least 20 articles can be between 40% and 70%, for instance between45% and 70% or between 51% and 59%. In some embodiments, an additionalwrapper 10 at least partially surrounds the aerosol generating material2, between the aerosol generating material 2 and the wrapper 6. Inparticular, during manufacture of the article, the aerosol generatingmaterial is first wrapped by additional wrapper 10 before being attachedin combination with the other components of the article 1 by wrapper 6.

In some embodiments, the additional wrapper 10 surrounding the aerosolgenerating material has a high level of permeability, for examplegreater than about 1000 Coresta Units, or greater than about 1500Coresta Units, or greater than about 2000 Coresta Units The permeabilityof the additional wrapper 10 can be measured in accordance with ISO2965:2009 concerning the determination of air permeability for materialsused as cigarette papers, filter plug wrap and filter joining paper. Theadditional wrapper 10 may be formed from a material with a high inherentlevel of permeability, an inherently porous material, or may be formedfrom a material with any level of inherent permeability where the finallevel of permeability is achieved by providing the additional wrapper 10with a permeable zone or area. Providing a permeable additional wrapper10 provides a route for air to enter the smoking article. The additionalwrapper 10 can be provided with a permeability such that the amount ofair entering through the rod of aerosol generating material 2 isrelatively more than the amount of air entering the article 1 throughthe ventilation area 12 in the mouthpiece. An article 1 having thisarrangement may produce a more flavorsome aerosol which may be moresatisfactory to the user.

In the embodiment illustrated by FIG. 1 , the article 1 furthercomprises a second tubular body 5 disposed between the aerosolgenerating material 2 and the first tubular body 3 The length of thesecond tubular body 5 is such that it extends away from the heater 101of the non-combustible aerosol provision device too by the minimumdistance d to provide the necessary separation between the first tubularbody 3 and the heater. The second tubular body 5 defines a cavity 5 abetween the aerosol generating material 2 and the first tubular body 3,wherein the length of the cavity 5 a is such that it extends away fromthe heater 101 of the non-combustible aerosol provision device too by atleast about 3 mm when the article is inserted into the non-combustibleaerosol provision device too

The second tubular body 5 is formed from paper. Specifically, the secondtubular body 5 comprises a paper tube 5 underlying the wrapper 6. Thepaper tube provides additional rigidity to the cavity 5 a. Specifically,the second tubular body 5 is formed from a plurality of layers of paperwhich are parallel wound, with butted seams, to form the tubular member5. In the present example, first and second paper layers are provided ina two-ply tube, although in other examples 3, 4 or more paper layers canbe used forming 3, 4 or more ply tubes. Other constructions can be used,such as spirally wound layers of paper, cardboard tubes, tubes formedusing a papier-mache type process, molded or extruded plastic tubes orsimilar. In some examples, the second tubular body 5 may be formed fromfibrous tow, as described for first tubular body 3. The second tubularbody 5 can also be formed using a stiff plug wrap and/or tipping paper,for instance as the wrapper 6 and/or further wrapper 6′, meaning that aseparate tubular element is not required, as illustrated in FIG. 3 anddescribed in greater detail below. The stiff plug wrap and/ or tippingpaper is manufactured to have a rigidity that is sufficient to withstandthe axial compressive forces and bending moments that might arise duringmanufacture and whilst the article 1 is in use. For instance, the stiffplug wrap and/or tipping paper can have a basis weight between 70 gsmand 120 gsm, more preferably between 80 gsm and 110 gsm. Additionally oralternatively, the stiff plug wrap and/or tipping paper can have athickness between 80 pm and 200 pm, more preferably between 100 pm and160 pm, or from 120 pm to 150 pm. It can be desirable for both thewrapper 6 and/or further wrapper 6′ to have values in these ranges, toachieve an acceptable overall level of rigidity for the hollow tubularmember 5.

The second tubular body 5 preferably has a wall thickness, which can bemeasured, for example using a caliper, of at least about too pm and upto about 1.5 mm, preferably between 100 pm and 1 mm and more preferablybetween 150 pm and 500 pm, or about 300 pm. In the present example, thesecond tubular body 5 has a wall thickness of about 250 pm. Preferably,the second tubular body 5 has a wall thickness of at least 100 micronsand/or a permeability of at least 100 Coresta units. By constructing thesecond tubular body 5 to have a permeability of at least 100 Corestaunits, the second tubular body 5 takes up moisture from aerosolgenerated by the aerosol generating material 2 when the article 1 isheated by the non-combustible aerosol provision device 100. Furthermore,papers with penneability greater than 100 Coresta units are generallylow weight and easier to work with during manufacturing. The secondtubular body 5 is configured to have a larger internal diameter, i.e. asmaller wall thickness, than the wall thickness of the first tubularbody 3. Preferably, the length of the second tubular body 5 is less thanabout 20 mm. More preferably, the length of the second tubular body 5 isless than about 18 mm. Still more preferably, the length of the secondtubular body 5 is less than about 15 mm. In addition, or as analternative, the length of the second tubular body 5 is preferably atleast about 5 mm. Preferably, the length of the second tubular body 5 isat least about 6 mm. In some preferred embodiments, the length of thesecond tubular body 5 is from about 10 mm to about 14 mm, morepreferably from about 11 mm to about 13 mm, most preferably about 12 mmIn the present example, the length of the second tubular body 5 is 12mm.

In some examples, the combined length of the second tubular body 5 andthe first tubular body 3 defines the spacing between the upstream end ofthe body 21 and the downstream end of the aerosol generating material 2.In the present example, the second tubular body 5 has a length of 12 mm,and the first tubular body 3 has a length of 9 mm. The body 21 istherefore separated from the aerosol generating material by a distanceof 21 mm. Preferably, the maximum separation between the body 21 and theaerosol generating material is 22 mm. Suitably, the distance maybe 21mm. It has been surprisingly found that providing a cooling sectioncomprised of a second tubular body 5 and a hollow tubular body 3,configured to extend a maximum of 22 mm from the aerosol generatingmaterial an improved aerosol may be provided. It ishypothesizedhypothesized that limiting the combined length of thecooling sections to less than 22 mm may reduce the condensation ofdesirable components of the aerosol on the inner surfaces of the coolingsection.

In addition, it has surprisingly been found that the use of firsttubular body 3 immediately upstream of body 21 can further reduce thecondensation of desirable components of the aerosol in the body 21.Without wising to be bound by theory, it is hypothesizedhypothesizedthat this is due to the first tubular body 3 channelingchannelingaerosol through the center of the body 21 at an increased flow rate,while the length of the cylindrical body 21 further reduces condensationin the body. In addition, by increasing the proportion of the aerosolchanneled through the centercenter of the cylindrical body 21, the crosssectional area of the cylindrical body through which aerosol passes iseffectively reduced, further reducing the potential condensation ofdesirable components of the aerosol in the cylindrical body 21.

The first tubular body 3 and second tubular body 5 are also referred toas cooling sections, and the cavities 5 a, 3 a defined thereby are alsoreferred to as respective first and second cavities 5 a, 3 a.

The second tubular body 5 and first tubular body 3 are each locatedaround and define respective air gaps within the mouthpiece 20 which actas cooling segments The air gaps provide chambers through which heatedvolatilizedvolatilized components generated by the aerosol generatingmaterial 2 flow. Preferably, the first cavity 5 a has an internal volumegreater than about 300 mm3 and/ or the second cavity 3 a has an internalvolume greater than about 100 mm3 For instance, the first cavity 5 a mayhave an internal volume of about 310 mm3 or about 330 mm3, and thesecond cavity 3 a may have an internal volume of about 120 mm3..

Providing cavities of at least these volumes has been found to enablethe formation of an improved aerosol, as well as providing the coolingfunction described herein. Such cavity sizes provide sufficient spacewithin the mouthpiece to allow heated volatilizedvolatilized componentsto cool, therefore allowing the exposure of the aerosol generatingmaterial 2 to higher temperatures than would otherwise be possible,since that may result in an aerosol which is too warm.

Surprisingly, the relative internal diameters and length of the firstand second cavities has been found to be important for improving thequality of the aerosol. It has been advantageously found that providinga second tubular body 5 having a length less than 18 mm, or less thanthe length of the aerosol generating material 2, reduces the likelihoodof desirable components of the aerosol condensing on the inner surfaceof the second tubular body 5. It has also been surprisingly found thatproviding a first tubular body 3, having a smaller inner diameter thanhollow tubular body 5, immediately downstream of the second tubular body5 provides a further improvement in the aerosol by channelingchannelingthe hot aerosol through the centercenter of the first tubular body 5,further reducing condensation on the inner surface of the tubularbodies.

The inner diameters of each of the first tubular body 3 and the secondtubular body 5 may be selected from a range of about 2 mm to about 6 mm,about 2 mm to about 5 mm, about 2.5 mm to about 4.5 mm and about 3.0 mmto about 4 mm. The inner diameter of the first tubular body 3 isselected to be smaller than the inner diameter of the second tubularbody 5. The second cavity can, for instance, have an internal volumegreater than 75 mm3, for instance greater than 90 mm³, 100 mm³, 140 mm³,or 150 mm³, allowing further improvement of the aerosol In someexamples, the second cavity 3 a comprises a volume of between about 130mm3 and about 180 mm3, for instance about 150 mm³. The first cavity can,for instance, have an internal volume greater than 100 mm³, for instancegreater than 200 mm³, 300 mm³, 350 m³, 400 mm³, or 500 mm³, allowingfurther improvement of the aerosol. In some examples, the first cavity 5a comprises a volume of between about 300 mm3 and about 400 mm3, orbetween about 340 mm3 and about 360 mm3 for instance about 350 mm3. Thesecond tubular body 5 can be configured to provide a temperaturedifferential of at least 40° C. between a heated volatilized componententering a first, upstream end of the hollow tubular member 5 and aheated volatilized component exiting a second, downstream end of thesecond tubular body 5. The second tubular body 5 is preferablyconfigured to provide a temperature differential of at least 60° C.,preferably at least 80° C. and more preferably at least 100° C. betweena heated volatilized component entering a first, upstream end of thehollow tubular member 5 and a heated volatilized component exiting asecond, downstream end of the second tubular body 5. This temperaturedifferential across the length of the second tubular body 5 protects thetemperature sensitive second body of material 21 from the hightemperatures of the aerosol generating material 2 when it is heated.

The first tubular body 3 can be configured to provide a temperaturedifferential of at least 5° C. between a heated volatilized componententering a first, upstream end of the first tubular body 3 and a heatedvolatilized component exiting a second, downstream end of the firsttubular body 3. The first tubular body 3 is preferably configured toprovide a temperature differential of at least 10° C., preferably atleast 12° C. and more preferably at least 15° C. between a heatedvolatilized component entering a first, upstream end of the firsttubular body 3 and a heated volatilized component exiting a second,downstream end of the first tubular body 3.

In the embodiments illustrated by FIGS. 1 to 3 , the mouth end section20 comprises a third tubular body 22. The third tubular body 22 definesthe mouth end of the article 1. The third tubular body 22 may comprise atube of cellulose acetate stiffened with plasticizer For example, thethird tubular body may be constructed in the same way as described forfirst tubular body 3, and may have a wall thickness and/or density inthe range as described for first tubular body 3. The third tubular body22 defines a cavity 22 a in the mouth end section 20 that opens at themouth end. In some embodiments, it can be particularly advantageous touse a tubular body 22 having a length of greater than about 10 mm, forinstance between about 10 mm and about 30 mm or between about 12 mm andabout 25 mm. It has been found that a consumer’s lips are likely toextend in some cases to about 12 mm from the mouth end of the article 1when drawing aerosol through the article 1, and therefore a tubular body22 having a length of at least 10 mm or at least 12 mm means that mostof the consumer’s lips surround this element. Preferably, the length ofthe third tubular body 22 is less than about 20 mm. More preferably, thelength of the third tubular body 22 is less than about 15 mm. Still morepreferably, the length of the third hollow tubular body 22 is less thanabout 10 mm. In addition, or as an alternative, the length of the thirdtubular body 22 is at least about 5 mm. Preferably, the length of thethird tubular body 22 is at least about 6 mm. In some preferredembodiments, the length of the third tubular body 22 is from about 5 mmto about 20 mm, more preferably from about 6 mm to about 10 mm, evenmore preferably from about 6 mm to about 8 mm, most preferably about 6mm, 7 mm or about 8 mm.

In the present example, the length of the third hollow tubular body 22is 6 mm. In other embodiments, it can be beneficial to use a tubularbody 22 having a length less than about 10 mm, for instance betweenabout 6 mm and about 9 mm, for instance about 6 mm. It has been foundthat reducing the length of the mouth end section 20 can reduce thecondensation of desirable components of the aerosol on the components ofthe article, and thereby result in delivery of an improved aerosol tothe user.

The use of the third tubular body 22 has also been found tosignificantly reduce the temperature of the outer surface of the article1 even upstream of the tubular body 22. Without wishing to be bound bytheory, it is hypothesized that this is due to the third hollow tubularbody 22 channeling aerosol closer to the center of the mouth end section20, and therefore reducing the transfer of heat from the aerosol to theouter surface of the article.

The third hollow tubular body 22 preferably has an internal diameter ofgreater than 3.0 mm. Smaller diameters than this can result inincreasing the velocity of aerosol passing though the mouth end section20 to the consumers’ mouth more than is desirable, such that the aerosolbecomes too warm, for instance reaching temperatures greater than 40° C.or greater than 45° C. More preferably, the tubular body 22 has aninternal diameter of greater than 3.1 mm, and still more preferablygreater than 3.5 mm or 3.6 mm. In one embodiment, the internal diameterof the tubular body 22 is about 3.9 mm.

The “wall thickness” of the third tubular body 22 corresponds to thethickness of the wall of the tube 22 in a radial direction. This may bemeasured in the same way as for first tubular body 3. The wall thicknessis advantageously greater than 0.9 mm, and more preferably 1.0 mm orgreater. Preferably, the wall thickness is substantially constant aroundthe entire wall of the third tubular body 22. However, where the wallthickness is not substantially constant, the wall thickness ispreferably greater than 0.9 mm at any point around the third tubularbody 22, more preferably 1.0 mm or greater.

In the present example, the article 1 includes a body of material 21.The body of material is substantially cylindrical, and positionedimmediately downstream of the first tubular body 3. The body of material21 is wrapped in an additional wrapping material, such as a first plugwrap 23. Preferably, the first plug wrap 23 has a basis weight of lessthan 50 gsm, more preferably between about 20 gsm and 40 gsm.Preferably, the first plug wrap 23 has a thickness of between 30 pm and60 pm, more preferably between 35 pm and 45 pm.

In other examples, the first plug wrap 23 has a basis weight greaterthan 65 gsm, for instance greater than 80 gsm, or greater than 95 gsm.In some examples, the first plug wrap 23 has a basis weight of about toogsm. It has advantageously been found that providing a first plug wraphaving a basis weight in these ranges and comprising an embossed patterncan reduce the temperature of the external surface of the article 1 at aposition overlying the body 21. For instance, first plug wrap 23 maybeprovided with an embossed pattern comprising a hexagonal repeatingpattern, a linear repeating pattern, or a series of raised areas havingany suitable shape. Without wishing to be bound by theory, it is thoughtthat providing an embossed first plug wrap 23 can provide an air gapbetween the plug wrap and the additional wrapper 10, which can reduceheat transfer to the external surface of the article 1.

Preferably, the first plug wrap 23 is a non-porous plug wrap, forinstance having a permeability of less than too Coresta units, forinstance less than 50 Coresta units. However, in other embodiments, thefirst plug wrap 23 can be a porous plug wrap, for instance having apermeability of greater than 200 Coresta units.

The third tubular body 22 is separated from the first tubular body 3 bythe body of material 21.

Preferably, the length of the body of material 21 is less than about 15mm. More preferably, the length of the body of material 21 is less thanabout 10 mm. In addition, or as an alternative, the length of the bodyof material 21 is at least about 5 mm Preferably, the length of the bodyof material 21 is at least about 6 mm. In some preferred embodiments,the length of the body of material 21 is from about 5 mm to about 15 mm,more preferably from about 6 mm to about 12 mm, even more preferablyfrom about 6 mm to about 12 mm, most preferably about 6 mm, 7 mm, 8 mm,9 mm or 10 mm. In the present example, the length of the body ofmaterial 21 is 10 mm.

The body of material 21, also referred to as cylindrical body 21, can beformed without any cavities or hollow portions, for instance withoutcavities or hollow portions having a dimension greater than 0.5 mmtherein. For instance, the cylindrical body of material can comprisematerial which extends substantially continuously throughout its volume.It can, for instance, have a density which is substantially uniformacross its diameter and/ or along its length.

In the present example, the body of material 21 is formed fromfilamentary tow. In the present example, the tow used in the body ofmaterial 21 has a denier per filament (d.p.f.) of 8.4 and a total denierof 21,000. Alternatively, the tow can, for instance, have a denier perfilament (d.p.f.) of 9.5 and a total denier of 12,000. Alternatively,the tow can, for instance, have a denier per filament d.p.f.) of 8 and atotal denier of 15,000. In the present example, the tow comprisesplasticized cellulose acetate tow. The plasticizer used in the towcomprises about 7% by weight of the tow. In the present example, theplasticizer is triacetin. In other examples, different materials can beused to form the body of material 21. For instance, rather than tow, thebody 21 can be formed from paper, for instance in a similar way to paperfilters known for use in cigarettes. Alternatively, the body 21 can beformed from tows other than cellulose acetate, for instance polylacticacid (PLA), other materials described herein for filamentary tow orsimilar materials. The tow is preferably formed from cellulose acetate.The tow, whether formed from cellulose acetate or other materials,preferably has a d.p.f of at least 5, more preferably at least 6 andstill more preferably at least 7. These values of denier per filamentprovide a tow which has relatively coarse, thick fibers with a lowersurface area which result in a lower pressure drop across the body ofmaterial 21 than tows having lower d.p.f. values. Preferably, to achievea sufficiently uniform body of material 21, the tow has a denier perfilament of no more than 12 d.p.f., preferably no more than 11 d.p.f.and still more preferably no more than 10 d.p.f.

The total denier of the tow forming the body of material 21 ispreferably at most 30,000, more preferably at most 28,000 and still morepreferably at most 25,000. These values of total denier provide a towwhich takes up a reduced proportion of the cross sectional area of thearticle 1 which results in a lower pressure drop across the article 1than tows having higher total denier values. For appropriate firmness ofthe body of material 21, the tow preferably has a total denier of atleast 8,000 and more preferably at least 10,000. Preferably, the denierper filament is between 5 and 12 while the total denier is between10,000 and 25,000 More preferably, the denier per filament is between 6and 10 while the total denier is between 11,000 and 22,000. Preferablythe cross-sectional shape of the filaments of tow are ‘Y’ shaped,although in other embodiments other shapes such as ‘X’ shaped or ‘O’shaped filaments can be used, with the same d.p.f. and total deniervalues as provided herein. The tow may comprise filaments having across-section with an isoperimetric ratio of 25 or less, preferably 20or less, and more preferably 15 or less. In some examples, the body ofmaterial 21 may comprise an adsorbent material (e.g. charcoal) dispersedwithin the tow. Irrespective of the material used to form the body 6,the pressure drop across body 6, can, for instance, be between 0.2 andsmmWG per mm of length of the body 6, for instance between o.smm WG and2 mmWG per mm of length of the body 6. The pressure drop can, forinstance, be between 0.5 and immWG/mm of length, between 1 and 1.5mmWC/mm of length or between 1.5 and 2 mmWG/mm of length The totalpressure drop across body 6 can, for instance, be between 2 mmWG and 8mWG, or between 4 mmWG and 7 mmWG. The total pressure drop across body 6can be about 5, 6 or 7 mmWG.

In some examples, the body of material 21 may comprise a capsule. Thecapsule can comprise a breakable capsule, for instance a capsule whichhas a solid, frangible shell surrounding a liquid payload. In someexamples, a single capsule is used The capsule is entirely embeddedwithin the body of material 21. In other words, the capsule iscompletely surrounded by the material forming the body. In otherexamples, a plurality of breakable capsules may be disposed within thebody of material 21, for instance 2, 3 or more breakable capsules Thelength of the body of material 21 can be increased to accommodate thenumber of capsules required. In examples where a plurality of capsulesis used, the individual capsules may be the same as each other, or maydiffer from one another in terms of size and/or capsule payload In otherexamples, multiple bodies of material maybe provided, with each bodycontaining one or more capsules.

In some embodiments, a non-combustible aerosol provision system isprovided comprising an aerosol modifying component and a heater 101which, in use, is operable to heat the aerosol generating material suchthat the aerosol generating material provides an aerosol. The aerosolmodifying component comprises first and second capsules. The firstcapsule is disposed in a first portion of the aerosol modifyingcomponent and the second capsule is disposed in a second portion of theaerosol modifying component downstream of the first portion.

The first portion of the aerosol modifying component is heated to afirst temperature during operation of the heater 101 to generate theaerosol and the second portion is heated to a second temperature duringoperation of the heater to generate aerosol, wherein the secondtemperature is at least 4° C. lower than the first temperature.Preferably, the second temperature is at least 5, 6, 7, 8, 9 or 10° C.lower than the first temperature.

The aerosol modifying component may comprise one or more components ofthe article In some embodiments, the aerosol modifying componentcomprises a body of material 21, wherein the first and second capsulesare disposed in the body of material 21. The body of material maycomprise cellulose acetate. In another embodiment, the aerosol modifyingcomponent comprises two bodies of material, wherein the first and secondcapsules are disposed in the first and second bodies respectively Insome embodiments, the aerosol modifying component alternatively oradditionally comprises one or more tubular elements upstream and/ordownstream of the body or bodies of material. The aerosol generatingcomponent may comprise the mouthpiece. In some embodiments, the secondcapsule is spaced from the first capsule by a distance of at least 7 mm,measured as the distance between the center of the first and secondcapsules Preferably, the second capsule is spaced from the first capsuleby a distance of at least 8, 9 or 10 mm. It has been found thatincreasing the distance between the first and second capsules increasesthe difference between the first and second temperatures

The first capsule comprises an aerosol modifying agent. The secondcapsule comprises an aerosol modifying agent which may be the same ordifferent as the aerosol modifying agent of the first capsule. In someembodiments, a user may selectively rupture the first and secondcapsules by applying an external force to the aerosol modifyingcomponent in order to release the aerosol modifying agent from eachcapsule. The aerosol-modifying agent of the second capsule is heated toa lower temperature than the aerosol-modifying agent of the firstcapsule due to the difference between the first and second temperatures.

The aerosol-modifying agents of the first and second capsules can beselected based on this temperature difference. For instance, the firstcapsule may comprise a first aerosol modifying agent that has a lowervapor pressure than a second aerosol modifying agent of the secondcapsule. If the capsules were both heated to the same temperature, thenthe higher vapor pressure of the aerosol modifying agent of the secondcapsule would mean that a greater amount of the second aerosol modifyingagent would be volatized relative to the aerosol modifying agent of thefirst capsule. However, since the second capsule is heated to a lowertemperature, this effect is less pronounced such that a more even amountof the aerosol modifying agents of the first and second capsules arevolatized upon breaking of the first and second capsules respectively.In some embodiments, the first and second capsules have the sameaerosol-modifying profiles, meaning that both capsules contain the sametype of aerosol-modifying agent and in the same amount such that if bothcapsules were heated to the same temperature and broken then bothcapsules would cause the same modification of the aerosol. However,since the first capsule is heated to a higher temperature than thesecond capsule, more of the aerosol-modifying agent of the first capsulewill be, for example, votatized compared to the modifying agent of thesecond capsule and thus will cause a more pronounced modification of theaerosol than the second capsule. Therefore, despite both capsules beingthe same, which may make the aerosol modifying component easier and/orless expensive to manufacture, the user can decide whether to break thefirst capsule to cause a more pronounced modification of the aerosol, orthe second capsule to cause a less pronounced modification of theaerosol, or both capsules to cause the greatest modification of theaerosol.

In some embodiments, the first and second capsules both comprise firstand second aerosol modifying agents. The first aerosol modifying agenthas a lower vapor pressure than the second aerosol modifying agent.Thus, when the second capsule is broken, a greater proportion of thesecond aerosol modifying agent will be vaporized relative to the firstaerosol modifying agent in comparison to when the hotter first capsuleis broken during use of the system to generate aerosol. Therefore, thesame capsule can be used to generate different modifications of theaerosol based on the position of the capsule in the first or secondportion of the aerosol modifying component

The capsule has a core-shell structure. In other words, the capsulecomprises a shell encapsulating a liquid agent, for instance a flavorantor other agent, which can be any one of the flavorants or aerosolmodifying agents described herein. The shell of the capsule can beruptured by a user to release the flavorant or other agent into the bodyof material 21. The first plug wrap 23 can comprise a barrier coating tomake the material of the plug wrap substantially impenneable to theliquid payload of the capsule. Alternatively or in addition, thewrapping material 6 can comprise a barrier coating to make the materialof the wrapping material 6 substantially impermeable to the liquidpayload of the capsule.

In some examples, the capsule is spherical and has a diameter of about 3mm. In other examples, other shapes and sizes of capsule can be used.The total weight of the capsule may be in the range about 10 mg to about50 mg.

It is known to generate, for a given tow specification (such as8.4Y21000), a tow capability curve which represents the pressure dropthrough a length of rod formed using the tow, for each of a range of towweights. Parameters such as the rod length and circumference, wrapperthickness and tow plasticizer level are specified, and these arecombined with the tow specification to generate the tow capabilitycurve, which gives an indication of the pressure drop which would beprovided by different tow weights between the minimum and maximumweights achievable using standard filter rod forming machinery. Such towcapability curves can be calculated, for instance, using softwareavailable from tow suppliers. It has been found that it is particularlyadvantageous to use a body of material 21 which includes filamentary towhaving a weight per mm of length of the body of material 21 which isbetween about 10% and about 30% of the range between the minimum andmaximum weights of a tow capability curve generated for the filamentarytow This can provide an acceptable balance between providing enough towweight to avoid shrinkage after the body 21 has been formed, providingan acceptable pressure drop, while also assisting with capsule placementwithin the tow, for capsules of the sizes described herein

A control sample and an article according to the claimed invention weretested, as described below, to determine the distribution of nicotineand glycerol, desirable components of the aerosol, throughout thearticle after use. The pre-use level of glycerol and nicotine in theaerosol generating material was also determined using mass balanceanalysis, as described below.

The control sample comprises an aerosol generating material sectionhaving a length of 30 mm, a second tubular body 5 arranged immediatelydownstream of the aerosol generating section, having a length of 17 mm,a cylindrical body 21 having a length of 10 mm, and a third tubular body22 having a length of 6 mm. Sample A has a construction as illustratedand generally described with reference FIG. 1 , including an aerosolgenerating material section having a length of 30 mm, a second tubularbody 5 arranged immediately downstream of the aerosol generating sectionand having a length of 8 mm, a first tubular body 3 having a length of 9mm, a cylindrical body 21 having a length of 10 mm, and a third tubularbody 22 having a length of 6 mm.

Samples for mass balance analysis were taken of the aerosol generatingmaterial 2; the cooling section, which comprises the second tubular body5, and where present, the first tubular body 3; and the mouth endsection, comprising the cylindrical body 21 and the third tubular body22.

The amount of nicotine and glycerol in each of the mouth end section,the cooling section and the aerosol generating section after use of thearticle can be determined using mass balance analysis. The amount ofnicotine and glycerol present in the delivered aerosol can be determinedusing emissions analysis. Mass balance analysis and emissions analysisare techniques which are known to the person skilled in the art.

Mean nicotine per component (mg/unit) as percentage of total pre-usenicotine content Aerosol Mouth end section Cooling section Aerosolgenerating material Control 27% 34% 25% 14% Sample A 48% 15% 24% 13% %difference between control and sample A 78% -56% -4% -7%

Table 1 Average nicotine content in sections of a control article, andan article according to the present disclosure (sample A).

Mean glycerol per component (mg/unit) as percentage of total pre-useglycerol content Aerosol Mouth end section Cooling section Aerosolgenerating material Control 13% 23% 25% 39% Sample A 24% 11% 22% 43% %difference between control and sample A 85% -52% -12% 10%

Table 2 Average glycerol content in sections of a control article, andan article according to the present disclosure (sample A). To obtain thedata provided in tables 1 and 2 above, mass balance analysis wasperformed to determine the amount of a given substance (in the examplesin tables 1 and 2 herein, nicotine and glycerol respectively), presentin a given section of the article after use. Mass balance analysis wasalso used to determine the amount of nicotine and glycerol present in agiven section of the article prior to use, so that both the distributionof the substance in the article and the amount present in the aerosolgenerated from an article could be compared to the total amount of thesubstance initially provided

As would be evident to the skilled person, where ‘the article’ isreferred to in relation to this data and the experimental methods bywhich the data was obtained, ‘the article’ does not refer to a singlespecific article, but rather an article having a specific design orconfiguration, which is therefore comparable to other articles havingthe same specific design or configuration. A number of such articleswill have been analyzed to obtain the values presented herein, whichrepresent mean values, as described in further detail below. As would beclear to the skilled person, the same individual article is not testedboth before and after use, to obtain the pre and post use data points.Instead, the pre use data will be obtained from a number of articleshaving a specific design or configuration, and the post use data will beobtained from a separate number of articles having the same specificdesign or configuration.

To obtain the samples for mass balance analysis, the article isdeconstructed into sections. The number of articles deconstructed toobtain samples is such that the total mass of the sample to be analyzedis at least 1 gram. Each sample comprises a number of the relevantcomponents of the deconstructed article (e.g. the aerosol generatingmaterial section 2, or the cylindrical body 21 and third tubular body22), the number being sufficient that the total mass of the componentstaken from a number of articles have a combined mass of at least 1 gram.At least three repetitions of mass balance analysis, each repetitionperformed on a new sample obtained from a new set of articles, should becarried out. The average amount of a substance in mg/unit is thenobtained from an average of the at least three repetitions (threerepetitions x typically 5 to 8 articles sampled per repetition = 15 to24 articles sampled for each average value obtained). As describedabove, mass balance analysis employing the sampling protocol describedin the preceding paragraph was performed to determine the pre-usenicotine and glycerol content of the article

Emissions analysis can be performed using a standard puffing regime, anda heating device intended for use with the article, to determine thenicotine and glycerol content of the generated aerosol The puffingregime is according to the ISO intense regime (where this includes a 55ml puff volume, a 30 s interval between puffs, and a 2 s puff duration),but with any ventilation in the open configuration. Where the device hasany ‘boost’ or additional smoking functions, these should not be usedfor performing the test

Following use under the standard puffing regime as described above,samples were then taken from the articles according to the samplingprotocol described above, for mass balance analysis to determine thepost use distribution of nicotine and glycerol in the article. Acomparison between the nicotine and glycerol content of the aerosol inthe control article and sample A reveals that 78% more nicotine and 85%more glycerol was present in the aerosol produced from sample A. Asignificantly increased amount of desirable components of the aerosol istherefore available for delivery to a user in articles preparedaccording to the present disclosure.

The data presented in tables 1 and 2 above shows less nicotine andglycerol was present in both the mouth end section and the coolingsections after use in sample A, compared to the control articles. Asdescribed above, it is hypothesized that this is due to a reduction incondensation of the aerosol on internal surfaces of the tubular bodiesand in the material of the cylindrical body.

In the embodiment illustrated by FIG. 2 , the length of the rod ofaerosol generating material 2 is such that it extends away from theheater 101 of the non-combustible aerosol provision device too by theminimum distance d when the article 1′ is inserted into thenon-combustible aerosol provision device too. Therefore, the rod ofaerosol generating material 2 provides the necessary separation betweenthe first tubular body 3 and the heater without having to space thefirst tubular body 3 from the rod of aerosol generating material.

In an embodiment illustrated by FIG. 3 , the first tubular body isseparated from the aerosol generating material 2 such that, when thearticle 1″ is inserted into the non-combustible aerosol provision devicetoo, the minimum distance d between the heater 101 of thenon-combustible aerosol provision device too and the first tubular body3 is maintained The space between the aerosol generating material 2 andthe first tubular body 3 defines a cavity 6 a.

It shall be appreciated that the third tubular body 22 is not essentialand may be omitted. For example, in the embodiment illustrated by FIG. 4the mouth end section 20′ comprises the body of material 21 adjacent thefirst tubular body 3 and held there against by wrapper 6.

In another embodiment illustrated by FIG. 4 a , the mouth end section20″ comprises a body of material 21 comprising an inner body 21 a and anouter body 21 b. The outer body 21 b is a tube that surrounds the innerbody 21 a. The resistance to gaseous flow through the length of theinner body 21 a is less than a resistance to gaseous flow through thelength of the outer body 21 b. This may be achieved by providing anouter body 21 b having a greater fiber density to the inner body 21 a.

In another embodiment illustrated by in section by FIG. 5 , the mouthend section 20 comprises a body of material 21 with a non-circular crosssection. In this embodiment, the sheet of additional wrapping material23 extending between the body of material 21 and the wrapper 6 comprisesa pattern of strength discontinuities. Said strength discontinuitiesresult in nonuniformity in the curvature of at least a portion of saidadditional wrapping material 23 to give the body of material 21 itsnon-circular cross section. In the illustrated embodiment, theadditional wrapping material 23 and body of material 21 within theadditional wrapping material 23 present a star shaped cross section.

A method of manufacturing an article 1 for use as or as part of anon-combustible aerosol provision system, will now be described withreference to FIG. 6 . The method comprises: step Si of providing anaerosol generating material 2 comprising at least one aerosol formingmaterial; and step S2 of disposing a tubular body downstream of theaerosol generating material, the tubular body 3 comprising a wallthickness greater than about 0.5 mm; step S3 of disposing a cylindricalbody 21 downstream of the tubular body; and step S4 of disposing asecond tubular body 22 downstream of the cylindrical body In someembodiments, steps S2 to S4 may be performed concurrently, and a wrappedsection comprising a tubular body 2, cylindrical body 21, and tubularbody 22 may be provided together for attachment to the aerosolgenerating material 2.

FIG. 7 shows an example of a non-combustible aerosol provision devicetoo comprising a heater 101 for generating aerosol from an aerosolgenerating medium/material such as the aerosol generating material 11 ofthe articles 10 described herein. In broad outline, the device too maybe used to heat a replaceable article 110 comprising the aerosolgenerating medium, for instance the article 10 described herein, togenerate an aerosol or other inhalable medium which is inhaled by a userof the device too. The device too and replaceable article 110 togetherform a system. The device 100 comprises a housing 102 (in the form of anouter cover) which surrounds and houses various components of the device100. The device 100 has an opening 104 in one end, through which thearticle 110 maybe inserted for heating by a heater 101, hereinafterreferred to as the heating assembly. In use, the article 110 may befully or partially inserted into the heating assembly where it may beheated by one or more components of the heater assembly.

The device 100 of this example comprises a first end member 106 whichcomprises a lid 108 which is moveable relative to the first end member106 to close the opening 104 when no article 110 is in place. In FIG. 7, the lid 108 is shown in an open configuration, however the lid 108 maymove into a closed configuration. For example, a user may cause the lid108 to slide in the direction of arrow “B”.

The device 100 may also include a user-operable control element 112,such as a button or switch, which operates the device 100 when pressed.For example, a user may turn on the device 100 by operating the switch112.

The device 100 may also comprise an electrical component, such as asocket/port 114, which can receive a cable to charge a battery of thedevice too. For example, the socket 114 may be a charging port, such asa USB charging port.

FIG. 8 depicts the device too of FIG. 7 with the outer cover 102 removedand without an article 110 present. The device too defines alongitudinal axis 134.

As shown in FIG. 8 , the first end member 106 is arranged at one end ofthe device too and a second end member 116 is arranged at an oppositeend of the device too. The first and second end members 106, 116together at least partially define end surfaces of the device too. Forexample, the bottom surface of the second end member 116 at leastpartially defines a bottom surface of the device too. Edges of the outercover 102 may also define a portion of the end surfaces. In thisexample, the lid 108 also defines a portion of a top surface of thedevice too.

The end of the device closest to the opening 104 may be known as theproximal end (or mouth end) of the device too because, in use, it isclosest to the mouth of the user. In use, a user inserts an article 110into the opening 104, operates the user control 112 to begin heating theaerosol generating material and draws on the aerosol generated in thedevice. This causes the aerosol to flow through the device 100 along aflow path towards the proximal end of the device 100.

The other end of the device furthest away from the opening 104 may beknown as the distal end of the device 100 because, in use, it is the endfurthest away from the mouth of the user. As a user draws on the aerosolgenerated in the device, the aerosol flows away from the distal end ofthe device 100.

The device 100 further comprises a power source 118. The power source118 maybe, for example, a battery, such as a rechargeable battery or anon-rechargeable battery. Examples of suitable batteries include, forexample, a lithium battery (such as a lithium-ion battery), a nickelbattery (such as a nickel-cadmium battery), and an alkaline battery. Thebattery is electrically coupled to the heating assembly to supplyelectrical power when required and under control of a controller (notshown) to heat the aerosol generating material. In this example, thebattery is connected to a central support 120 which holds the battery118 in place

The device further comprises at least one electronics module 122. Theelectronics module 122 may comprise, for example, a printed circuitboard (PCB). The PCB 122 may support at least one controller, such as aprocessor, and memory. The PCB 122 may also comprise one or moreelectrical tracks to electrically connect together various electroniccomponents of the device too For example, the battery terminals maybeelectrically connected to the PCB 122 so that power can be distributedthroughout the device too. The socket 114 may also be electricallycoupled to the battery via the electrical tracks.

In the example device too, the heating assembly is an inductive heatingassembly and comprises various components to heat the aerosol generatingmaterial of the article 110 via an inductive heating process. Inductionheating is a process of heating an electrically conducting object (suchas a susceptor) by electromagnetic induction An induction heatingassembly may comprise an inductive element, for example, one or moreinductor coils, and a device for passing a varying electric current,such as an alternating electric current, through the inductive elementThe varying electric current in the inductive element produces a varyingmagnetic field. The varying magnetic field penetrates a susceptorsuitably positioned with respect to the inductive element, and generateseddy currents inside the susceptor The susceptor has electricalresistance to the eddy currents, and hence the flow of the eddy currentsagainst this resistance causes the susceptor to be heated by Jouleheating. In cases where the susceptor comprises ferromagnetic materialsuch as iron, nickel or cobalt, heat may also be generated by magnetichysteresis losses in the susceptor, i.e. by the varying orientation ofmagnetic dipoles in the magnetic material as a result of their alignmentwith the varying magnetic field. In inductive heating, as compared toheating by conduction for example, heat is generated inside thesusceptor, allowing for rapid heating. Further, there need not be anyphysical contact between the inductive heater and the susceptor,allowing for enhanced freedom in construction and application.

The induction heating assembly of the example device 100 comprises asusceptor arrangement 132 (herein referred to as “a susceptor”), a firstinductor coil 124 and a second inductor coil 126. The first and secondinductor coils 124, 126 are made from an electrically conductingmaterial. In this example, the first and second inductor coils 124, 126are made from Litz wire/ cable which is wound in a helical fashion toprovide helical inductor coils 124, 126. Litz wire comprises a pluralityof individual wires which are individually insulated and are twistedtogether to form a single wire. Litz wires are designed to reduce theskin effect losses in a conductor. In the example device too, the firstand second inductor coils 124, 126 are made from copper Litz wire whichhas a rectangular cross section. In other examples the Litz wire canhave other shape cross sections, such as circular.

The first inductor coil 124 is configured to generate a first varyingmagnetic field for heating a first section of the susceptor 132 and thesecond inductor coil 126 is configured to generate a second varyingmagnetic field for heating a second section of the susceptor 132. Inthis example, the first inductor coil 124 is adjacent to the secondinductor coil 126 in a direction along the longitudinal axis 134 of thedevice too (that is, the first and second inductor coils 124, 126 to notoverlap) The susceptor arrangement 132 may comprise a single susceptor,or two or more separate susceptors. Ends 130 of the first and secondinductor coils 124, 126 can be connected to the PCB 122.

It will be appreciated that the first and second inductor coils 124,126, in some examples, may have at least one characteristic differentfrom each other. For example, the first inductor coil 124 may have atleast one characteristic different from the second inductor coil 126.More specifically, in one example, the first inductor coil 124 may havea different value of inductance than the second inductor coil 126. InFIG. 8 , the first and second inductor coils 124, 126 are of differentlengths such that the first inductor coil 124 is wound over a smallersection of the susceptor 132 than the second inductor coil 126. Thus,the first inductor coil 124 may comprise a different number of turnsthan the second inductor coil 126 (assuming that the spacing betweenindividual turns is substantially the same). In yet another example, thefirst inductor coil 124 may be made from a different material to thesecond inductor coil 126. In some examples, the first and secondinductor coils 124, 126 may be substantially identical.

In this example, the first inductor coil 124 and the second inductorcoil 126 are wound in opposite directions. This can be useful when theinductor coils are active at different times For example, initially, thefirst inductor coil 124 may be operating to heat a first section/portionof the article 110, and at a later time, the second inductor coil 126may be operating to heat a second section/portion of the article 110.Winding the coils in opposite directions helps reduce the currentinduced in the inactive coil when used in conjunction with a particulartype of control circuit. In FIG. 8 , the first inductor coil 124 is aright-hand helix and the second inductor coil 126 is a left-hand helix.However, in another embodiment, the inductor coils 124, 126 may be woundin the same direction, or the first inductor coil 124 may be a left-handhelix and the second inductor coil 126 may be a right-hand helix.

The susceptor 132 of this example is hollow and therefore defines areceptacle within which aerosol generating material is received. Forexample, the article 110 can be inserted into the susceptor 132. In thisexample the susceptor 120 is tubular, with a circular cross section.

The susceptor 132 may be made from one or more materials. Preferably thesusceptor 132 comprises carbon steel having a coating of Nickel orCobalt.

In some examples, the susceptor 132 may comprise at least two materialscapable of being heated at two different frequencies for selectiveaerosolization of the at least two materials. For example, a firstsection of the susceptor 132 (which is heated by the first inductor coil124) may comprise a first material, and a second section of thesusceptor 132 which is heated by the second inductor coil 126 maycomprise a second, different material. In another example, the firstsection may comprise first and second materials, where the first andsecond materials can be heated differently based upon operation of thefirst inductor coil 124 The first and second materials maybe adjacentalong an axis defined by the susceptor 132, or may form different layerswithin the susceptor 132. Similarly, the second section may comprisethird and fourth materials, where the third and fourth materials can beheated differently based upon operation of the second inductor coil 126.The third and fourth materials maybe adjacent along an axis defined bythe susceptor 132, or may form different layers within the susceptor132. Third material may the same as the first material, and the fourthmaterial may be the same as the second material, for example.Alternatively, each of the materials may be different The susceptor maycomprise carbon steel or aluminum for example. The device 100 of FIG. 8further comprises an insulating member 128 which may be generallytubular and at least partially surround the susceptor 132 The insulatingmember 128 may be constructed from any insulating material, such asplastic for example. In this particular example, the insulating memberis constructed from polyether ether ketone (PEEK). The insulating member128 may help insulate the various components of the device too from theheat generated in the susceptor 132

The insulating member 128 can also fully or partially support the firstand second inductor coils 124, 126. For example, as shown in FIG. 8 ,the first and second inductor coils 124, 126 are positioned around theinsulating member 128 and are in contact with a radially outward surfaceof the insulating member 128. In some examples the insulating member 128does not abut the first and second inductor coils 124, 126. For example,a small gap may be present between the outer surface of the insulatingmember 128 and the inner surface of the first and second inductor coils124, 126.

In a specific example, the susceptor 132, the insulating member 128, andthe first and second inductor coils 124, 126 are coaxial around acentral longitudinal axis of the susceptor 132. FIG. 9 shows a side viewof device too in partial cross-section. The outer cover 102 is presentin this example. The rectangular cross-sectional shape of the first andsecond inductor coils 124, 126 is more clearly visible.

The device too further comprises a support 136 which engages one end ofthe susceptor 132 to hold the susceptor 132 in place The support 136 isconnected to the second end member 116. The device may also comprise asecond printed circuit board 138 associated within the control element112. The device 100 further comprises a second lid/cap 140 and a spring142, arranged towards the distal end of the device 100. The spring 142allows the second lid 140 to be opened, to provide access to thesusceptor 132. A user may open the second lid 140 to clean the susceptor132 and/or the support 136. The device 100 further comprises anexpansion chamber 144 which extends away from a proximal end of thesusceptor 132 towards the opening 104 of the device. Located at leastpartially within the expansion chamber 144 is a retention clip 146 toabut and hold the article 110 when received within the device 100. Theexpansion chamber 144 is connected to the end member 106.

FIG. 10 is an exploded view of the device 100 of FIG. 9 , with the outercover 102 omitted.

FIG. 11A depicts a cross section of a portion of the device 100 of FIG.9 FIG. 11B depicts a close-up of a region of FIG. 11A. FIGS. 11A and 11Bshow the article 110 received within the susceptor 132, where thearticle 110 is dimensioned so that the outer surface of the article 110abuts the inner surface of the susceptor 132. This ensures that theheating is most efficient. The article 110 of this example comprisesaerosol generating material 110 a. The aerosol generating material 110 ais positioned within the susceptor 132. The article 110 may alsocomprise other components such as a filter, wrapping materials and/ or acooling structure.

FIG. 11B shows that the outer surface of the susceptor 132 is spacedapart from the inner surface of the inductor coils 124, 126 by adistance 150, measured in a direction perpendicular to a longitudinalaxis 158 of the susceptor 132. In one particular example, the distance150 is about 3 mm to 4 mm, about 3-3.5 mm, or about 3.25 mm.

FIG. 11B further shows that the outer surface of the insulating member128 is spaced apart from the inner surface of the inductor coils 124,126 by a distance 152, measured in a direction perpendicular to alongitudinal axis 158 of the susceptor 132 In one particular example,the distance 152 is about 0.05 mm. In another example, the distance 152is substantially omm, such that the inductor coils 124, 126 abut andtouch the insulating member 128.

In one example, the susceptor 132 has a wall thickness 154 of about0.025 mm to imm, or about 0.05 mm.

In one example, the susceptor 132 has a length of about 40 mm to 60 mm,about 40 mm to 45 mm, or about 44.5 mm. In one example, the insulatingmember 128 has a wall thickness 156 of about 0.25 mm to 2 mm, 0.25 mm to1 mm, or about 0.5 mm

In use, the article 10 described herein can be inserted into anon-combustible aerosol provision device such as the device 100described with reference to FIGS. 7 to 11 . At least a portion of themouthpiece 1 of the article 10 protrudes from the non-combustibleaerosol provision device 100 and can be placed into a user’s mouth. Anaerosol is produced by heating the aerosol generating material 11 usingthe device 100. The aerosol produced by the aerosol generating material11 passes through the mouthpiece 1 to the user’s mouth.

The various embodiments described herein are presented only to assist inunderstanding and teaching the claimed features These embodiments areprovided as a representative sample of embodiments only, and are notexhaustive and/or exclusive. It is to be understood that advantages,embodiments, examples, functions, features, structures, and/or otheraspects described herein are not to be considered limitations on thescope of the invention as defined by the claims or limitations onequivalents to the claims, and that other embodiments may be utilizedand modifications may be made without departing from the scope of theclaimed invention. Various embodiments of the invention may suitablycomprise, consist of, or consist essentially of, appropriatecombinations of the disclosed elements, components, features, parts,steps, means, etc, other than those specifically described herein. Inaddition, this disclosure may include other inventions not presentlyclaimed, but which may be claimed in future.

1. An article for use as or as part of a non-combustible aerosolprovision system, the article comprising: an aerosol generating materialcomprising at least one aerosol forming material; a first hollow tubularbody disposed downstream of the aerosol generating material, the firsthollow tubular body comprising a wall thickness greater than about 0.5mm; a second hollow tubular body comprising a wall thickness greaterthan about 0.5 mm; and a cylindrical body disposed between the firsthollow tubular body and the second hollow tubular body.
 2. An articlefor use as or as part of a non-combustible aerosol provision system, thearticle comprising: an aerosol generating material comprising at leastone aerosol forming material; and a hollow tubular member formed fromcellulosic material and disposed immediately downstream of the aerosolgenerating material; wherein, the length of the hollow tubular member isbetween about 5 mm and about 18 mm.
 3. The article according to claim 2,wherein the article further comprises a first hollow tubular bodydisposed downstream of the hollow tubular member.
 4. The articleaccording to claim 3, wherein the first hollow tubular body comprises awall thickness of greater than about 0.5 mm.
 5. The article according toclaim 3, wherein the article further comprises a second hollow tubularbody having a wall thickness of greater than about 0.5 mm.
 6. Thearticle according to claim 5, wherein the article further comprises acylindrical body disposed between the first hollow tubular body and thesecond hollow tubular body.
 7. The article according to claim 1, whereinthe cylindrical body is positioned immediately adjacent the first hollowtubular body and the second hollow tubular body.
 8. The articleaccording to claim 1, wherein the cylindrical body is substantiallycontinuous.
 9. The article according to claim 1 when dependent fromclaim 1, wherein the article further comprises a hollow tubular memberdisposed immediately downstream of the aerosol generating material. 10.The article according to claim 9 when dependent from claim 1, whereinthe length of the hollow tubular member is between about 5 mm and about18 mm.
 11. The article according to any one of claim 1, wherein thefirst tubular body and/ or the second tubular body have an averagedensity between about 0.25 g/cc and about 0.75 g/cc.
 12. The articleaccording to any one of claim 1, wherein the first hollow tubular bodyis formed from paper or filamentary tow.
 13. The article according toany one of claim 1, wherein the second hollow tubular body is formedfrom paper or filamentary tow.
 14. The article according to any one ofclaim 2, wherein the hollow tubular member is formed from paper orfilamentary tow.
 15. The article according to any one of claim 1,wherein the pressure drop across the cylindrical body is between 0.3 and5 mmWG per mm of length of the cylindrical body, or between 0.5 mmWG and2 mmWG per mm of length of the cylindrical body, or between 0.5 and 1mmWG/mm of length of the cylindrical body, or between 1 and 1.5 mmWG/mmof length of the cylindrical body, or between 1.5 and 2 mmWG/mm oflength of the cylindrical body.
 16. The article according to claim 1,wherein the pressure drop across the cylindrical body is between 3 mmWGand 8 mWG, or between 4 mmWG and 7 mmWG.
 17. The article according toclaim 1, wherein the first hollow tubular body and/or the second hollowtubular body comprise a wall thickness between 0.5 mm and 2.5 mm.
 18. Asystem comprising: a non-combustible aerosol provision device, and anarticle according to claim
 1. 19. A system comprising: a non-combustibleaerosol provision device, and an article according to claim 1, whereinthe aerosol generating material is provided with an amount of nicotine,and wherein the aerosol generated by the system, in use, comprises atleast 30% of the amount of nicotine provided in the aerosol generatingmaterial prior to use, or at least 35% of the amount of nicotineprovided in the aerosol generating material prior to use, or at least40% of the amount of nicotine provided in the aerosol generatingmaterial prior to use.
 20. The system according to claim 19, wherein usecomprises following a standard puffing regime.
 21. The systemcomprising: a non-combustible aerosol provision device, and an articleaccording to claim 1, wherein the aerosol generating material isprovided with an amount of glycerol, and wherein the aerosol generatedby the system, in use, comprises at least 15% of the amount of glycerolprovided in the aerosol generating material prior to use, or at least20% of the amount of glycerol provided in the aerosol generatingmaterial prior to use.
 22. The system according to claim 21, wherein usecomprises following a standard puffing regime.
 23. A method ofmanufacturing an article according to claim 1, the method comprising:providing an aerosol generating material comprising at least one aerosolforming material; and disposing a tubular body downstream of the aerosolgenerating material, the tubular body comprising a wall thicknessgreater than about 0.5 mm; disposing a cylindrical body downstream ofthe tubular body; and disposing a second tubular body downstream of thecylindrical body.